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Math Help - Trigononmetry Problem/ Picture?

  1. #1
    Newbie suckatmaths's Avatar
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    Trigononmetry Problem/ Picture?

    I really need help with this Trigonometry Question.

    "From an observer O, the angles of elevation to the bottom and the top of a flagpole are 36degrees and 38degrees respectively. Find the height of the flagpole. (Find AB and AC).

    -Picture to problem: http://s525.photobucket.com/albums/cc340...

    Thanks in advance.

    (I have tried twice, but got two different answers... 11 + 12 something...)
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  2. #2
    Newbie suckatmaths's Avatar
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    I think this link will work: ujwjw picture by EdenJonas - Photobucket
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  3. #3
    MHF Contributor
    skeeter's Avatar
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    \tan(38^{\circ}) = \frac{AC}{200}

    AC = 200\tan(38^{\circ})


    \tan(36^{\circ}) = \frac{AB}{200}

    AB = 200\tan(36^{\circ})


    so, height of the flagpole ...

    BC = AC - AB
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